Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old English
þeġn
→
Old English
maguþegn
(affix)
→
Old English
þenian
(mention)
→
Old English
þegnian
(affix)
→
Old English
ciricþegn
(compound)
→
Irish
taen
(mention)